Description
NBR stopper, black, lower diameter 17 mm, upper diameter 22 mm and height 25 mm is a tapered laboratory rubber stopper designed for sealing glassware and apparatus. Made from nitrile butadiene rubber (NBR), the black stopper incorporates two parallel bores of 4 mm diameter, permitting simultaneous insertion of tubing, thermometers or sensors while preserving an effective seal. The conical geometry tapers from 17 mm at the lower end to 22 mm at the upper end over a height of 25 mm, providing a firm fit in corresponding openings. Net weight per piece is 0,0079 kg. These stoppers from manufacturer Deutsch & Neumann come in packs of 100 pieces and suit general laboratory sealing tasks that benefit from the chemical resistance of NBR toward oils and many solvents. They are commonly used to close flasks, bottles and reaction vessels requiring dual-port access. The robust rubber body withstands repeated handling under typical laboratory conditions.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Material: NBR rubber
- Colour: Black
- Lower diameter: 17 mm
- Upper diameter: 22 mm
- Height: 25 mm
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Questions about stopper NBR, black, bottom diameter: 17 mm top diameter: 22 mm height: 25 mm
What is this article?
stopper NBR, black, bottom diameter: 17 mm top diameter: 22 mm height: 25 mm is the article on this page. Luminix Health distributes Deutsch & Neumann for laboratory use. It sits in Rubber & silicone stoppers, inside Stoppers, caps & closures, in Labware.
A rubber or silicone stopper is pushed into a mouth. The size number corresponds to a top and bottom diameter. Silicone survives higher temperatures and more autoclave cycles. Natural rubber is attacked by oils and by some solvents.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Rubber & silicone stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Ground-joint glass stoppers, Lids & seals and Closures (other).
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
